## anonymous 2 years ago A student pushes a 40-N block across the floor for a distance of 10 m. How much work was applied to move the block? A. 4 J B. 40 J C. 400 J D. 4000 J

1. anonymous

2. anonymous

I think it's also C because work=force x distance.

3. theEric

Right! Because the force and displacement are in the same exact direction, you can use that formula.

4. anonymous

thanks everyone! You all are very helpful!

5. theEric

:) You're welcome! More generally, $$\large W=F\dot\ d\dot\ \cos(\theta)$$ where $$\theta$$ is the angle between force and displacement. You can see that, when they're in the same direction, $$\theta=0$$ $$\implies W=F\dot\ d\dot\ \cos(0)=F\dot\ d\dot\ 1=F\dot\ d$$